f2fs: don't need to call lock_op and lock_page for abort
authorJaegeuk Kim <jaegeuk@kernel.org>
Wed, 10 Dec 2014 21:59:33 +0000 (13:59 -0800)
committerJaegeuk Kim <jaegeuk@kernel.org>
Sat, 10 Jan 2015 01:02:21 +0000 (17:02 -0800)
We don't need to call lock_op and lock_page at the aborting path.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
fs/f2fs/segment.c

index 11e4b5c146162aa23def8febb4ab381002adc3fa..3ce86c533604a6be9aa033b27f09f299fdc2bdc2 100644 (file)
@@ -240,33 +240,38 @@ void commit_inmem_pages(struct inode *inode, bool abort)
         * Otherwise, f2fs_gc in f2fs_balance_fs can wait forever until this
         * inode becomes free by iget_locked in f2fs_iget.
         */
-       if (!abort)
+       if (!abort) {
                f2fs_balance_fs(sbi);
-
-       f2fs_lock_op(sbi);
+               f2fs_lock_op(sbi);
+       }
 
        mutex_lock(&fi->inmem_lock);
        list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) {
-               lock_page(cur->page);
-               if (!abort && cur->page->mapping == inode->i_mapping) {
-                       f2fs_wait_on_page_writeback(cur->page, DATA);
-                       if (clear_page_dirty_for_io(cur->page))
-                               inode_dec_dirty_pages(inode);
-                       do_write_data_page(cur->page, &fio);
-                       submit_bio = true;
+               if (!abort) {
+                       lock_page(cur->page);
+                       if (cur->page->mapping == inode->i_mapping) {
+                               f2fs_wait_on_page_writeback(cur->page, DATA);
+                               if (clear_page_dirty_for_io(cur->page))
+                                       inode_dec_dirty_pages(inode);
+                               do_write_data_page(cur->page, &fio);
+                               submit_bio = true;
+                       }
+                       f2fs_put_page(cur->page, 1);
+               } else {
+                       put_page(cur->page);
                }
                radix_tree_delete(&fi->inmem_root, cur->page->index);
-               f2fs_put_page(cur->page, 1);
                list_del(&cur->list);
                kmem_cache_free(inmem_entry_slab, cur);
                dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
        }
-       if (submit_bio)
-               f2fs_submit_merged_bio(sbi, DATA, WRITE);
        mutex_unlock(&fi->inmem_lock);
 
-       filemap_fdatawait_range(inode->i_mapping, 0, LLONG_MAX);
-       f2fs_unlock_op(sbi);
+       if (!abort) {
+               f2fs_unlock_op(sbi);
+               if (submit_bio)
+                       f2fs_submit_merged_bio(sbi, DATA, WRITE);
+       }
 }
 
 /*